2E69 - P135B

2020 BMW 128i Coupe (E82) L6-3.0L (N51) Diagnostic Trouble Codes ( DTC ): Service instruction

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2E69 - P135B (DME)

2E69 - P135B

Information saved in

DME

Fault code

2E69 - P135B

Fault text

Knock-sensor signal 2

Fault description

Knock Sensor 2 Circuit Range/Performance (Bank 1)

Condition for fault identification

Test condition:

Knock sensor signal monitor

Vehicle road operation at >2800 1 rpm (current data status, tends toward >2560 rpm) and air mass > 180 mg/unit. It is not possible to clear fault by switching ignition terminals. Compliance with the activation conditions and absence of malfunction extending over several seconds are required before fault code can be cleard.

Terminal condition: Terminal 15, engine on Voltage condition:

Voltage in onboard electrical system > 10 V

Condition for fault memory entry

The debounce time is derived from assessment of statistical diagnosis

Action in service

Check knock sensor connection to verify that it is tight.

Check wire connecting knock sensor 1 and engine- management control module

Check for connection between knock sensor 1 and ground or positive

Replace knock sensor

Fault effect and breakdown warning

Driver information

Warning light:

No warning message. (No closed-loop knock control available. Power loss, as engine reverts to operation in safe range.)